1 /**
2 * This file Copyright (c) 2008-2011 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.module.rssaggregator.importhandler;
35
36 import info.magnolia.cms.core.Content;
37 import static info.magnolia.module.rssaggregator.importhandler.FilterPredicate.Condition;
38 import info.magnolia.module.rssaggregator.util.ContentMapper;
39 import org.apache.commons.lang.StringUtils;
40
41 import static java.util.Arrays.asList;
42
43 /**
44 * Maps a content node representing a {@link FilterPredicate} to a FilterPredicate.
45 *
46 * @author Rob van der Linden Vooren
47 */
48 public class FilterPredicateContentMapper implements ContentMapper<FilterPredicate> {
49
50 /**
51 * Map a content node representing a FilterPredicate. Will return <code>null</code> if are properties
52 *
53 * @param filterNode the content node to map to a FilterPredicate
54 * @return the FilterPredicate built from the given content node, or <code>null</code> if one of the properties
55 * (condition, property, regex) are is blank.
56 */
57 public FilterPredicate map(Content filterNode) {
58 String condition = filterNode.getNodeData("condition").getString();
59 String property = filterNode.getNodeData("property").getString();
60 String regularExpression = filterNode.getNodeData("regex").getString();
61 for (String value : asList(condition, property, regularExpression)) {
62 if (StringUtils.isBlank(value)) {
63 // In this case no filters have actually been defined via the CMS, however an 'empty' filter definition
64 // entry still is present.
65 return null;
66 }
67 }
68 return new FilterPredicate(Condition.valueOf(condition), property, regularExpression);
69 }
70
71 }